FCI-Fluid Components International

FCI-Fluid Components International manufactures air/gas flowmeters, liquid/gas flow switches and flow conditioners. In both municipal and industrial WWT plants, FCI is the leading supplier in aeration and digester gas flow measurement applications, so you can install with total confidence and assurance that you are getting the right product, backed by FCI’s worldwide service and support.


1755 La Costa Meadows Drive
San Marcos, CA 92078
United States
Toll-free: 800.854.1993
Phone: 760.744.6950
Fax: 760.736.6250


FCI Capabilities
Flow Conditioning
Meter Calibration
Calibration Verification

Industry News + Articles

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Improved Flowmeter Line Features Digital Bus Communication

FCI’s compact thermal flowmeter line has been expanded and improved with an advanced electronics design that features the addition of HART version 7 digital bus...
Jacob Ethen and Steve Cox write on flowmeters at a Minnesota facility

Co-Generational Collaboration

The city of St. Cloud, Minn., straddles the Mississippi River near the center of the state a little more than 65 miles north of the twin cities of Minneapolis and St....
Water treatment plant chlorine tanks

Chlorine Flow Measurement

The water municipality of a mid-size city in the Western region of the U.S. serving a population of approximately 180,000 people needed to address a chlorine...
Improving Gas-to-Energy Efficiency

Improving Gas-to-Energy Efficiency

The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green cogeneration waste-to-energy project to...

Flow Switch Protects Pumps & Extends Service Life

The FlexSwitch FLT93 pump protection flow switch from Fluid Components International (FCI) detects dry running conditions caused by irregular liquid flows or slurries.

Product Categories

Flow Metering; Flowmeters; Meters, Flow; Sensors, Flow; Instrumentation